The disk is nearly full and one folder looks enormous. Before deleting it, find out what role it plays. It might contain a replaceable cache, the only local copy of your photos or files an application expects to keep.
Start with the system’s storage view
Use the operating system’s storage settings to inspect categories and available cleanup options. On Windows, Storage Sense and cleanup recommendations can help, but read the settings and selections before confirming them. Automatic cleanup deserves the same attention as a manual deletion.
Do not remove unfamiliar system or application folders simply because they are large. Uninstall an unwanted application through the supported interface instead.
Separate replaceable from irreplaceable
Old installers may be easy to download again. Personal documents and project files may not be. Before moving the latter to another drive, copy them, open a selection at the destination and establish how they will be backed up.
A cloud file visible in a folder can be locally available or represented by a placeholder. Understand the service’s option for freeing local space before using ordinary Delete, which may affect the synchronised file itself.
Work in small passes
Clean one category, check the result and continue only if needed. Leave the recycle bin available until you have checked that important work still opens. The aim is usable space with a clear account of what changed, rather than the largest possible number on a cleanup screen.